Alzheimer's disease is a brain disordered named after German physician Alois Alzheimer, who first described it in 1906. It is a progressive and fatal illness which destroys brain cells. Generally it is diagnosed in people over the age of 65, but it can occur much easier. The most commonly recognized symptom is memory lose, such as difficulty in remembering recently learned facts. As the disease advances, symptoms include confusion, irritability and aggression. Scientists have suggested that mental stimulation, exercise and a balanced diet may prevent Alzheimer's disease, but the effects of these habits have not been proven. The most important factor in its treatment is the caregiver, who is usually the spouse or a close relative. These people normally take care of the patient at home until the symptoms become too difficult to cope with and they are moved to a long-term care facility 1. The physician who discovered Alzheimer's disease was from the age of sixty-five. 2. There are few Alzheimer suffers 3. Alzheimer sufferers can't remember things they have learnt 4. Some scientists believe that people who do physical and mental exercise are likely to get Alzheimer's disease. 5. Patients are looked after by their husband or or a close relative at first.